我想使用下面的代码检索第一个电话号码,在该号码前添加一个零并保存电话号码。我是新手,到目前为止,下面的代码打开联系人列表,然后用户选择一个电话号码,电话号码显示为祝酒词。但是,我希望我的联系人列表中的第一个电话号码前面为零,然后保存。我知道我离解决方案不远,但是在尝试时,如果我得到您的帮助会更快。谢谢。
公共类 MainActivity 扩展 Activity {
public static final int PICK_CONTACT = 1;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// this opens the activity. note the Intent.ACTION_GET_CONTENT
// and the intent.setType
((Button)findViewById(R.id.btn_contacts)).setOnClickListener( new OnClickListener() {
@Override
public void onClick(View v) {
// user BoD suggests using Intent.ACTION_PICK instead of .ACTION_GET_CONTENT to avoid the chooser
Intent intent = new Intent(Intent.ACTION_GET_CONTENT);
// BoD con't: CONTENT_TYPE instead of CONTENT_ITEM_TYPE
intent.setType(ContactsContract.CommonDataKinds.Phone.CONTENT_ITEM_TYPE);
startActivityForResult(intent, 1);
}
});
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.activity_main, menu);
return true;
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (data != null) {
Uri uri = data.getData();
if (uri != null) {
Cursor c = null;
try {
c = getContentResolver().query(uri, new String[]{
ContactsContract.CommonDataKinds.Phone.NUMBER,
ContactsContract.CommonDataKinds.Phone.TYPE },
null, null, null);
if (c != null && c.moveToFirst()) {
String number = c.getString(0);
int type = c.getInt(1);
showSelectedNumber(type, number);
}
} finally {
if (c != null) {
c.close();
}
}
}
}
}
public void showSelectedNumber(int type, String number) {
Toast.makeText(this, type + ": " + number, Toast.LENGTH_LONG).show();
}
}